[openstack-dev] a "common" client library

Renat Akhmerov rakhmerov at mirantis.com
Tue Jan 21 19:58:07 UTC 2014

+1 for opening new threads regarding specific questions.

On 21 Jan 2014, at 11:54, Renat Akhmerov <rakhmerov at mirantis.com> wrote:

> On 21 Jan 2014, at 09:40, Sean Dague <sean at dague.net> wrote:
>> On 01/21/2014 11:54 AM, Renat Akhmerov wrote:
>>> On 17 Jan 2014, at 22:00, Jamie Lennox <jamielennox at redhat.com
>>> <mailto:jamielennox at redhat.com>> wrote:
>>>> (I don't buy the problem with large amounts of dependencies, if you
>>>> have a meta-package you just have one line in requirements and pip
>>>> will figure the rest out.)
>>> +1
>>> Renat Akhmerov
>>> @ Mirantis Inc.
>> Man, where were you then when we had to spend 3 weeks unwinding global
>> requirements in the gate because pip was figuring it out all kinds of
>> wrong, and we'd do things like uninstall and reinstall
>> python-keystoneclient 6 times during an install. Because after that
>> experience, I'm very anti "pip will figure the rest out”.
> Honestly, I was very far but now I’m much closer :)
>> Because it won't, not in python, where we're talking about libraries
>> that are in the global namespace, where python can only have 1 version
>> of a dependency installed.
>> If the the solution is every openstack project should install a venv for
>> all it's dependencies to get around this issue, then we're talking a
>> different problem (and a different architecture from what we've been
>> trying to do). But I find the idea of having 12 copies of
>> python-keystone client installed on my openstack environment to be
>> distasteful.
> I see your point. Right now this is really a problem. I hope it’ll be solved someday globally so that python could have more than 1 version of a library. However, some organizational steps could be made to strictly control versions of libraries.
> Anyway, I admit you’re right here.
>> So come spend a month working on requirements updates in OpenStack
>> gate…
> Frankly, never had significant experience in that. I would love to :)
>> well you are a braver man than I. :)
> Nope, it’s hardly true :)

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